Key points are not available for this paper at this time.
Fred A. Johnson, Clinton T. Moore, William L. Kendall, James A. Dubovsky, David F. Caithamer, James R. Kelley, Jr., Byron K. Williams, Uncertainty and the Management of Mallard Harvests, The Journal of Wildlife Management, Vol. 61, No. 1 (Jan., 1997), pp. 202-216
Johnson et al. (Wed,) studied this question.